Cory Williams, Chief of Biotechnical Engineering with the U.S. Corps of Engineers, Memphis District, speaks during an interview at a levee on the west side of the Mississippi River Monday, May 9, 2011... more 
Cory Williams, Chief of Biotechnical Engineering with the U.S. Corps of Engineers, Memphis District, speaks during an interview at a levee on the west side of the Mississippi River Monday, May 9, 2011 in Memphis, Tenn. less 
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Associated Press | Photo By Wade Payne
Mon, May 9, 2011 6:33 PM EDT